NFPA 99 Medical Gas Edition Exam 2025

When brazing, joints shall be continuously purged with ____________,________to prevent the formation of copper oxide in the inside surfaces of the joint. - Correct Ans-Oil Free, Dry Nitrogen NF T or F The runouts from horizontal mains branches shall be taken off any angle off of the center line of pipeline? - Correct Ans-False— no longer part of the NFPA 99C reference section 5.1.10.10.6 2005,2012 An existing system that is not in strict compliance with the provisions of this code shall be permitted to be continued in use as long as the ______ has determined that such use does not constitute a distinct hazard to life. - Correct Ans-Authority Having Jurisdiction (AHJ) Indoor location for oxygen, nitrous oxide, and mixtures of these gases shall not communicate with any of the following except - Correct Ans-designate storage area 5.1.3.3.1.5 (pg27) An auxiliary source connection shall consist of all of the following EXCEPT Removable plug or cap Tee Valve Visual pressure indicator - Correct Ans-Visual pressure indicator (5.1.3.5.7 (Pg29)) When multiple buildings are served from a single cryogenic liquid oxygen source, it is required to place the emergency oxygen supply connection in___________. -each building served -the building closet to the source -the largest building served -the main building only - Correct Ans-Each building served (5.1.3.5.15 (2) pg33)) The minimum clearance around the EOSC for a temporary source of supply is ______ft - Correct Ans-3ft 5.1.3.5.15.2(7) pg33 The quality medical air shall comply with all of the following standards EXCEPT -be filtered to .01 microns -have less than 25ppm gaseous hydrocarbon -have no detectable liquid hydrocarbons -meet the requirement of medical air USP - Correct Ans-Be filter to .01 micron (5.1.3.6.1 (pg33)) Cylinder and cryogenic liquid container outlet connections shall be designed as to render the attachment point_________ when removal of the outlet connection is attempted. - Correct Ans-Unusable (5.1.3.1.5 pg27) Cylinder in use and in storage shall be prevented from reaching temperatures in excess of_______. - Correct Ans-125 F Nitrous oxides and carbon dioxide or portable container be prevented from reaching temperatures lower than of_______. - Correct Ans-20F Which of the following systems shall not be permitted to be located in an OUTDOOR enclosure? - Correct Ans-Medical Air Sources (5.1.3.3.1.1-pg27) Location for central supply systems shall have ________ devices protected from physical damages - Correct Ans-Electrical (5.1.3.3.2(12) pg28) Outdoor location surrounded by impermeable walls, except fire barrier walls, shall have protected ventilation openings located at the_________ of each wall to allow free circulation of air within the enclosure. - Correct Ans-Base (5.1.3.3.3.4(1) pg28) All positive pressure supply systems shall be provided with duplex line pressure regulators piped in________. - Correct Ans-Parallel (5.1.3.5.5.1 pg29) The medical air intake shall be located a minimum of ________from ventilating system exhausts, fuel storage vents, combustion vents, plumbing vents, vacuum and WAGD discharges, or areas that can collect vehicular exhausts or other noxious fumes. - Correct Ans-25' (5.1.3.6.3.11(B) pg35) The medical air intake shall be located a minimum of _______above ground level - Correct Ans-20' (5.1.3.6.3.11 (C) pg35 The medical air intake shall be located a minimum of __________from any door, window, or other opening in the building. - Correct Ans-10' (5.1.3.6.3.11 (D) pg35 The end of the intake shall be turned_______ and __________ or otherwise be protected against the entry of vermin, debris, and material should be non corroding material. - Correct Ans-Down, Screened (5.1.3.6.3.11 (h) pg35 Medical air source shall only be used for ________. - Correct Ans-Human respiratory applications and calibration of medical devices Medical air filters shall be size for 100% of system peak calculated demand and be rated for a minimum of 98% efficiency at ______micron or greater - Correct Ans-1 (5.1.3.6.3.8 pg34) It a medical air supply system dryers, filters, and regulators shall be ________ - Correct Ans-At Least duplexed (5.1.3.6.3.9 (E) pg35) Vacuum receivers shall be capable of withstanding a gauge vacuum of _____ in of HgV. - Correct Ans-30 (5.1.3.7.3 (3) pg37) Medical air SHALL be supplied from cylinders, bulk containers, or medical air compressor sources, or it shall be reconstituted from________ and _____________ - Correct Ans-Oxygen USP and Oil-free, nitrogen NF (5.1.3.6.1 (1) pg33) Medical air shall have NO detectable liquid __________. - Correct Ans-Hydrocarbons (5.1.3.6.1 (3) pg33) Medical air shall have less than _______ppm gaseous hydrocarbon. - Correct Ans-25 ppm 5.1.3.6.1 (4) pg 33 The medical-surgical vacuum receiver shall be made serviceable by __________ . - Correct Ans-Continuation of service 5.1.3.7.4.2 pg38 A medical-surgical vacuum exhaust shall be turned down screened. The screening shall be fabricated using ___material. - Correct Ans-Any non corroding Vacuum exhaust from multiple pumps joined together to one common exhaust shall be permitted provided the sizing will _________. - Correct Ans-Minimize back pressure (5.1.3.7.6.5 (1) pg38 Vacuum exhaust from multiple pumps joined together to one common exhaust shall be permitted provided each pump can be isolated. What style fitting cannot be used? - Correct Ans-GROOVED JOINT (5.1.3.7.6.5 (2) pg38) blind flange, check or manual valve is permitted With the approval of the authority having jurisdiction, a zone valve shall be permitted to be secured to prevent inappropriate access in _________ area. - Correct Ans-Psychiatric or pediatric (5.1.4.1.4 (B) pg39 New or replacement valves are not required to ___________ - Correct Ans-Be ball valve (5.1.4.1.6(1-7) pg 39-40 A ________ shutoff valve shall be provided in the main supply line when the source valve is NOT accessible from within the building being served. - Correct Ans-Main (5.1.4.3.1 (2) pg40) In-line check valve are not required to have__________. - Correct Ans-Threaded connection (5.1.4.9 (4) pg40) Each station outlet/inlet for medical gasses and vacuums shall be________. - Correct Ans-Gas specific (5.1.5.1 pg40) Factory-installed copper inlet tubes on station OUTLETs (positive pressure) extending no further than 8in from the body of the terminal shall be not less than DN8 _______ minimum inside diameter. - Correct Ans-NPS 1/4" (3/8" O.D.) 5.1.5.11 pg41 Factory-installed copper inlet tubes on station INLETs (negative pressure) extending no further than 8in from the body of the terminal shall be not less than DN10 _______ minimum inside diameter. - Correct Ans-NPS 3/8" (1/2" O.D.) 5.1.5.12 Station outlets (positive pressure) in systems having nonstandard operating pressure shall be___________ - Correct Ans-Gas and pressure specific (5.1.5.15 (1&2) pg 41) Station outlets that operate at a pressure in excess of ________Psi shall be either D.I.S.S. or be designed to relieve pressure prior to removal of adapter. - Correct Ans-80 PSI (5.1.5.15 (3)pg41) The scale range of positive pressure analog indicators shall have the normal operating pressure fall within the _________of the gauge scale. - Correct Ans-Middle third (5.1.8.1.3 pg42) All master, area, and local alarm systems shall include separate ________ and ____________ indicators for each condition monitored. - Correct Ans-Visible, Audible (5.1.9.1 pg 42) All master, area, and local alarm systems used for medical gas and vacuum systems shall include the following: cancelable audible indication of each alarm condition that produces a sound with a minimum level of _____________. - Correct Ans-80 dBA at 3' (5.1.9.1 (3) pg 42) All warning systems switches and sensors shall be installed so as to be___________. - Correct Ans-Removable 5.1.9.1 pg 42 A master alarm system shall consist of two or more alarm panels, one of which can be substituted by____________. - Correct Ans-Centralralized computer system (5.1.9.2.2) Master alarm panel's medical air dew point water highł________. - Correct Ans-35F An instrument air dew point high alarms from each commpressor site to indicate when the line pressure - Correct Ans--22 F (5 .1.9.2.4 (12) pg 43 Hard drawn seamless copper tube in accordance with the following.___________ - Correct Ans-ASTM B88 ASTM B280 ASTM B819 Which piping materials shall be permitted for field installed medical-surgical vacuum distribution piping system. - Correct Ans-Copper and Stainless steel (5.1.10.2 pg45) Threaded joints in medical gas and medical-surgical vacuum systems shall be permitted for all of the following EXCEPT____________ - Correct Ans-Check valves in main line (5.1.10.8(1) pg48) Threaded joints shall be allowed in the source equipment on the _____side of the source valve. - Correct Ans-Source (5.1.10.8 (1) pg48) Mains and branches in MEDICAL GAS piping system shall be not less than _________ NPS - Correct Ans-1/2" NPS (5.1.10.11.1.2 pg48) Mains and branches in medical-surgical vacuum systems shall be not less than_________NPS - Correct Ans-3/4" NPS Underground piping buried outsi